In terms of overclocking, I attempted to get by a couple of hurdles we've had with in our Athlon XP 2400+ review. One overclock that has always eluded us was the 15x166 OC. The other OC that has failed was 12.5x199. Unfortunently, we didn't have any more success. I should add that we did match the overclocks that the Swiftech MCX462+ managed.
We have also included the Abit NF7-S nForce2 AMD Athlon XP motherboard which uses the nForce2 chipset so you can see the performance difference between KT400 & nForce2 chipset AMD Athlon XP motherboards.
The highest working speed is 300Core/580Memory. I was not able to push the any higher without random lock ups. I was a bit surprised to see the memory hit its limit at 580 MHz, as our Leadtek GF4 Ti-4200 8X which uses 4ns Samsung can be overclocked 610 MHz. Maybe we got lucky with the Leadtek.